Hi, Here are the small devmap page-freeing cleanups as requested, so that they can be reviewed separately from the larger "track dma-pinned pages series" [1] that they were originally part of. I did not add Jan Kara's and Jerome Glisse's reviewed-by tags, because those were for patch 2 but as part of [1], which is different enough from this series that I couldn't treat it as "close enough". Testing: Dan notes that his patch (1) has passed nvdimm unit tests. However, I have not yet done much testing of the two patches together. What I've done so far is to boot up a system that has CONFIG_DEV_PAGEMAP_OPS=y and run LTP tests on it, but none of those tests are exercising free_devmap_managed_page(). Dan, if you could run this combined set through your unit tests, I'd feel a lot better about it. I'll also work on getting my HMM test setup revived. [1] https://lore.kernel.org/r/20191113042710.3997854-1-jhubbard@xxxxxxxxxx Dan Williams (1): mm: Cleanup __put_devmap_managed_page() vs ->page_free() John Hubbard (1): mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages drivers/nvdimm/pmem.c | 6 ---- include/linux/mm.h | 27 +++++++++++++-- mm/memremap.c | 76 ++++++++++++++++++++----------------------- 3 files changed, 60 insertions(+), 49 deletions(-) -- 2.24.0
